Generated August 15, 2026.
Overview
TFLO and USFR are both ETFs tracking U.S. Treasury floating-rate bonds, delivering monthly income tied to short-term interest rates. They are nearly identical in cost (0.15% expense ratio each), inception date, and yield (both around 3.79–3.80%), but differ in their underlying indexes and asset bases, with USFR holding substantially more capital ($19.0B vs. $6.69B).
How they differ
The core difference is index methodology. USFR explicitly tracks the Bloomberg U.S. Treasury Floating Rate Bond Index, while TFLO's underlying index is not specified in its fund materials but follows iShares' own Treasury floating-rate approach. USFR's larger asset base ($19.0B) suggests it has become the dominant vehicle in this niche, potentially offering tighter spreads and lower trading costs due to higher liquidity. Both charge the same 0.15% expense ratio and deliver monthly distributions at nearly identical yields. Their matching betas of −0.02 indicate both move independently of equity markets—a hallmark of ultra-short Treasury exposure. Pricing is essentially equivalent ($50.58 for TFLO, $50.45 for USFR).
Who each is best for
TFLO: Fits investors seeking a simple, low-cost Treasury floating-rate ETF with no particular preference for index methodology and comfort with slightly lower trading volume relative to the category leader.
USFR: Fits investors who prefer transparent, well-documented index tracking (Bloomberg methodology) and value the deeper liquidity and scale that come with a $19.0B fund base.
Key risks to know
- Interest rate floor risk. Both ETFs hold Treasury floating-rate notes that reset periodically. If the Fed holds rates flat or cuts, distribution payments may not rise as expected, potentially disappointing income-focused investors accustomed to yield climbing alongside the fed funds rate.
- Minimal spread cushion. Treasury floaters offer extremely narrow credit risk (backed by the U.S. government) but provide little cushion against inflation or opportunity cost if rates remain low relative to historical norms.
- Liquidity and NAV tracking risk. TFLO's smaller AUM may result in wider bid-ask spreads during market stress, causing purchase or redemption prices to diverge temporarily from net asset value. USFR's larger scale mitigates this risk.
- Limited duration upside. Both funds' near-zero beta and ultra-short maturity profile mean they capture almost no price appreciation if Treasury yields fall—a trade-off for stability but a constraint if market conditions shift.
Bottom line
If you value transparency and the deepest available liquidity in Treasury floaters, USFR's larger scale and named Bloomberg index provide a modest edge; if you prioritize simplicity and are indifferent to index naming, TFLO delivers the same yield and costs at a smaller fund size. Either way, expect income tied tightly to fed funds movements, not sustained current-level yields if the Fed cuts rates. Past performance does not guarantee future distributions.
AI-generated analysis for educational purposes only. Verify important details independently; past performance does not guarantee future results.